1″ furnace Small benchtop furnace.2000°c in low vacuum, 2200°c with inert gas. Choice of hot-zone size; 20-60mm diameter, 0-60mm tall, flat or cylidrical elements. Durable carbon composite element.Low power requirement. <1Kw to heat 50mm diameter x 10mm tall crucible to 2000°c in low vacuum.DC power supply with programmable PID controller.RKC controller allows easy programming of ramp, dwell and cooldown cycles, with a maximum of 16 steps and 8 differennt recipes. 1″ furnace hot zone